• DocumentCode
    1749409
  • Title

    Improved power-law detection of transients

  • Author

    Wang, Zhen ; Willett, Peter

  • Author_Institution
    Connecticut Univ., Storrs, CT, USA
  • Volume
    5
  • fYear
    2001
  • fDate
    2001
  • Firstpage
    3181
  • Abstract
    A power-law statistic operating on DFT data has emerged as a basis for a remarkably robust detector of transient signals having unknown structure, location and strength. In this paper we offer a number of improvements to the original power-law detector. Specifically, the power-law detector requires that its data be pre-normalized and spectrally white; a CFAR and self-whitening version is developed and analyzed. Further, it is noted that transient signals tend to be contiguous both in temporal and frequency senses, and consequently new power-law detectors in the frequency and the wavelet domains are given. The resulting detectors offer exceptional performance and are extremely easy to implement. There are no parameters to tune, and they may be considered "plug-in" solutions to the transient detection problem
  • Keywords
    discrete Fourier transforms; frequency-domain analysis; signal detection; statistical analysis; transients; wavelet transforms; CFAR; DFT data; frequency domain; power-law statistic; power-law transient detection; robust detector; self-whitening power-law detector; wavelet domain; Colored noise; Contracts; Detectors; Frequency; Robustness; Signal detection; Statistics; Storms; Wavelet domain; White noise;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on
  • Conference_Location
    Salt Lake City, UT
  • ISSN
    1520-6149
  • Print_ISBN
    0-7803-7041-4
  • Type

    conf

  • DOI
    10.1109/ICASSP.2001.940334
  • Filename
    940334